Dumb-waiter indicator.



H. H. CALLAN.

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APPLICATION FILED MAY20.1915.`

Q. Raw 5% d@ 1 #zy I ,71 0M- ZQWMJZ A TTORNEY UNITED STATES PATENT OFFICE.

HENRY H. CALLAN, or NEW YORK, NL Y.

DUMB-WAITER INDICATOR.

Application filed May 20, 1915.

To all whom it may concern Be it known that I, HENRY H. CALLAN, a citizen of the United States, and a resident of New York, borough of Bronx, county of Bronx, and State of New York, have invented a certain new and useful Improvement in Dumb-Waiter Indicators, of which the following is a. full, clear, and exact specification.

This invention relates more particularly to a class of devices adapted to be used in conjunction with dulnbwaiters and the like.

My invention has for its object primarily to provide an indicator designed to be employed for permitting the carriage of the dumbwaiter of an apartment building, or other structure to be located when being hoisted by a person so that the necessity to glance upward in the shaft of the apparatus may be obviated, in order to stop the carriage thereof at its proper' destination, thereby overcoming the danger of the person being injured by articles falling therefrom as is incident to the ordinary forms of this class of apparatus.

The invention consists essentially of a flexible strip-like body, or belt which is fastened to the carriage of the dumbwaiter so as to be guided upwardly and downwardly in the shaft of the dumbwaiter synchronously with the raising and lowering of the carriage, and on the exposed surface of this strip-like body are provided spaced indexes whereby the destination of the carriage may be indicated to the operator of the dumbwaiter.

Other objects of the invention are to provide in the shaft of the dumbwaiter two rotatable elements, or rollers serving to support the strip-like body in the shaft; to provide on each of the rollers a guide for guiding the revoluble movement of the striplike body; and to provide an indicator of a simple and efficient form, and which is susceptible of being made so as to be adaptable for use in conjunction with dumbwaiters of various types.

A practical embodiment of the invention is represented in the accompanying drawing forming a part of this specification in which similar characters of reference indicate corresponding parts in all the views, the said invention being more fully described hereinafter, and thenpointed out in the claim at the end of the description.

Specification of Letters Patent.

Patented Sept. 19, 1916.

Serial No. 29,404.

In the drawing, Figure 1 is a fragmentary view, partly broken away and partly in section, of one form of indicator embodying my invention applied to a dumbwaiter. Fig. 2 is a section taken on the line 2-2 of Fig. 1, aindlFig. 3 is a fragmentary view, partly in section, showing a rear view of the indicator with the carriage of the dumbwaiter rcmoved therefrom.

The indicator has a strip-like body 10 which may be made of canvas, leather', or any other suitable flexible material, and this strip-like body is preferably in the form of a belt. Part of the fiexible strip-like body, or belt 10 is separated to provide two ends 11 and 12, and one of the ends is fastenedby bolts, or otherwise to the underside of the bottom of the carriage 18 of the dumbwaiter 14, while the other' end of the belt is likewise fastened to the top of the carriage. The dumbwaiter 11 may be of any well known, or preferred type, for instance a form as illustrated, which is adapted to be hoisted and lowered in the shaft, as 15, of an apartment building, or other structure by operating in the ordinary manner an apparatus consisting of a cable, or rope, as 16, which is guided over a pulley 17, and over a second pulley 18 is guided another cable, or rope 19, the carriage 18 being raised or lowered to and from the entrance, as 20, at the bottom of the shaft to a number of destinations, or outlets, as 21 and 22, leading to various floors of the interior of the upper part of the building by pulling the cable 19 accordingly in the usual manner.

The Hexible strip-like body, or belt 10 is of a length so as to extend from the lower part of the shaft 15 at or below its entrance 20 to or above the upper outlet of the shaft, and serving to support the belt provided in the lower part of the shaft are two bearings 23 and 2/1 in which is journaled a rotatable element, or roller 25, while in the upper part of the shaft are two other bearings 26 and 27 in which is journaled a similar rotatable element, or roller 28. The belt 10 is guided over the rolle-rs 25 and 28 so as to be revolubly moved when the carriage of the dumbwaiter is raised or lowered, and to prevent the belt from shifting on the roller, a pair of guides, or sleeves, as 29, are arranged on the roller 25, while on the roller 28 are a similar pair of guides, or sleeves 30. The belt 10 is arranged between each pair of the guides 29 and 30, and these guides are suiiiciently spaced apart to permit the belt to be freely movable.

When the dumbwaiter is operated by a person pulling the cable 19 at the entrance 2O of the shaft as is incident to the operation of this class of apparatus for hoisting and lowering the carriage 13, and to allow the operator to observe when the carriage 13 has been transmitted to its proper destination, on the exposed surface of the belt 10 are a number of indexes 31. The indexes 31 are preferably in the forms of numerals which are inscribed, or otherwise provided on the belt so as to indicate the destinations, or outlets of the shaft leading to the floors of the building of the dumbwaiter, and these indexes, or numerals are spaced apart at distances equivalent to the distances between the destinations as well as being arranged relatively to the carriage so that when the carriage is transmitted to the first destination the numeral 1 on the belt will be exposed to view through the entrance 2O of the shaft. When the carriage has been transmitted to the second destination the number 2 on the belt will be exposed through the entrance, and in this manner the various destinations of the dumbwaiter will be indicated to the operator of the apparatus without requiring the person to glance upwardly in the shaft to observe whether the carriage 13 has been raised, or lowered the required distance, thus overcoming the danger of the person being injured by articles falling therefrom.

In the foregoing description, I have elnbodied the preferred form of my invention, but I do not wish to be understood as limiting myself thereto, as I ain aware that modifications may be made therein without departing from the principle, or sacrificing any of the advantages of this invention, therefore I reserve to myself the right to make such changes as fairly fall within the scope of the appended claim.

Having thus described my invention, I claim as new and desire to secure by Letters Patent The combination with the carriage of a dumbwaiter, of a stripof flexible material of a width whereby index characters may be inscribed on its surfaces, the said strip being fastened to the carriage for being moved simultaneously with the raising' and lowering of the Carriage, and the strip extending in belt-like fashion above and below the carriage as well as being movably supported in the upper and lower parts of the dumbwaiter shaft so that the indexes will be successively exposed at the entrances to the shaft.

This specification signed and witnessed this nineteenth day of May, A. D. 1915.

HENRY II. CALLAN.

Witnesses:

Ro'r. B. ABBOTT, M. DERMODY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of late-nts. Washington, I). C. 

